Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thiet tach » chiet tach, thien hach, thuat tach
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
cua thuong » cua truong, cua phuong, ca thuong
hanh tinh » hanh trinh, thanh tinh, canh tinh
so thiet » soc thiet, hoc thiet, hoa thiet
cong tan » cong tac, cong san, cong thanh
tan ran » tan tran, tan van, tan san
ran cau » van cau, ban cau, can cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so thiet tach - ((hanh tinh) OR (nhanh tinh)) cua thuong cong tan ran cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so thiet tach - ((hanh tinh) OR (nhanh tinh)) cua thuong cong tan ran cau*".